CVE-2003-1562 Race condition in n/a

High 7.6 Published 4 Aug 2008 Updated 16 Sep 2024

Remote attackers can exploit timing differences in OpenSSH to determine if a root password is correct, bypassing authentication delays.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2003-1562?

CVE-2003-1562 is a high-severity vulnerability in OpenSSH, published on 4 Aug 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

sshd in OpenSSH 3.6.1p2 and earlier, when PermitRootLogin is disabled and using PAM keyboard-interactive authentication, does not insert a delay after a root login attempt with the correct password, which makes it easier for remote attackers to use timing differences to determine if the password step of a multi-step authentication is successful, a different vulnerability than CVE-2003-0190.

Weakness: CWE-362

Which versions are affected by CVE-2003-1562?

It affects 1 product.

Products include OpenSSH.

How do I fix CVE-2003-1562?

Upgrade to a fixed version.

Is CVE-2003-1562 being exploited?

There is no known exploitation of CVE-2003-1562 in the wild and no public exploit code.

All OpenSSH vulnerabilities

Sources

Also known as DEBIAN-CVE-2003-1562, GHSA-49wx-627v-6mcq.